Overview Of Link Data Transmission When Standby Master Function Is In Use - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
16 External PLC link
16.1 CC-Link

16.1.4.2 Overview of Link Data Transmission When Standby Master Function Is in Use

Below is the outline of how link data are transmitted when standby master function is in use.
When master station controls data link:
 Master station output
Master station (controlling)
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
Data sent from the master station to the remote input RX and remote register RWr in the standby master station (shown by
the shaded areas in the above diagram) are used as output data when the master station becomes faulty; these data should
be saved in another device using the sequence program.
When the master station becomes faulty, the saved data are transferred to the remote output RY and remote register RWw in
the standby master station using the sequence program.
 Master station input
Master station (controlling)
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
Data sent to the remote output RY and remote register RWw in the standby master station are used as input data by the
standby master station when local stations are operating; thus these data don't need to be saved in another device.
Standby master station (waiting)
Station No.1 : Occupies 1 station
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
Standby master station (waiting)
Station No.1 : Occupies 1 station
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
927
Remote I/O station
Station No.2 : Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
Station No.2 : Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
Station No.3 : Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
Station No.3 : Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
IB-1501668-B